KeyPress

[Kid Programmer]

Hello guys. I was wondering how you make an event happen when the user presses a key. I have seen code used for this but I don't understand how it works.
Here is the code in a sample I found:

import java.awt.*;
import java.awt.event.*;

public class KeyPress extends Frame{
  Label label;
  TextField txtField;
  public static void main(String[] args) {
    KeyPress k = new KeyPress();
  }

  public KeyPress(){
    super("Key Press Event Frame");
    Panel panel = new Panel();
    label = new Label();
    txtField = new TextField(20);
    txtField.addKeyListener(new MyKeyListener());
    add(label, BorderLayout.NORTH);
    panel.add(txtField, BorderLayout.CENTER);
    add(panel, BorderLayout.CENTER);
    addWindowListener(new WindowAdapter(){
      public void windowClosing(WindowEvent we){
        System.exit(0);
      }
    });
    setSize(400,400);
    setVisible(true);
  }

  public class MyKeyListener extends KeyAdapter{
    public void keyPressed(KeyEvent ke){
      char i = ke.getKeyChar();
      String str = Character.toString(i);
      label.setText(str);
    }
  }

Could someone please explain to me how this works.

[sukatoa]

The more detailed explanations about KeyListeners can be found here.

And also download the JAVA API documentations. it is useful.....

regards,
sukatoa